# GTR092 — Convert RST `<help>` to Markdown (opt-in command)

**Contract:** render-equivalence (proof by execution).
## Claim
The conversion is kept only when provably render-equivalent.

## Proof — by execution, per tool
Render the RST exactly as Galaxy's server does (docutils html4css1) and the
converted CommonMark exactly as Galaxy's client does (markdown-it `js-default`,
`html:false`); reduce both to a normalized semantic skeleton; accept iff equal
(tier-1 `rst_markdown`, xml §24). Negative-controlled. Profile ≥ 24.2 XSD gate;
never part of `format`/`upgrade` (it swaps the rendering engine by design —
hence opt-in-command-only).